Vapor chamber manufacturing method
A manufacturing method and steam chamber technology, applied in lighting and heating equipment, indirect heat exchangers, heat exchange equipment, etc., can solve the problems of reduced grain boundary corrosion resistance, solder wetting and expansion hindrance, grain boundary cracks, etc., to achieve Effects of suppressing reduction in heat transfer performance, suppressing coarsening, and improving leak resistance and corrosion resistance
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Embodiment 1
[0113] Copper alloys shown in Table 1 were cast, and copper alloy strips with a thickness of 0.40 mm were produced by the production methods described above. In Table 1, No. 1 and 2 are Cu-Fe-P systems, No. 3 to 5 are Cu-(Ni, Co)-Si systems, and No. 6 is Cu-(Ni, Co)-P systems. No. 7 is a Cu-Cr system, No. 8 is a Cu-Cr-Zr system, and No. 9 is a conventional OFC (Oxygen-Free Copper).
[0114] With the manufactured copper alloy strips as test materials, the 0.2% yield strength, elongation and electrical conductivity were measured according to the following methods.
[0115] The plate extracted from each produced copper alloy strip was water-cooled after heating at 850° C. for 30 minutes in a bonding step corresponding to a steam chamber. Take the water-cooled board as the test material, and measure the 0.2% yield strength and electrical conductivity in the same way.
[0116] In addition, for the plate extracted from each copper alloy strip produced, water cooling after heating ...
Embodiment 2
[0131] Copper alloys having the compositions shown in Nos. 1, 3, 6, and 9 of Table 1 were cast, and copper alloy strips with a thickness of 1.0 mm were produced by the production methods described above. Take the manufactured copper alloy strip as the test material, and measure the 0.2% yield strength at high temperature according to the following method. The results are shown in Table 3. Note that Nos. 1A, 3A, 6A, and 9A in Table 3 mean copper alloy strips having a plate thickness of 1.0 mm and alloy compositions corresponding to those of Nos. 1, 3, 6, and 9 in Table 1, respectively.
[0132] (measurement of 0.2% yield strength at high temperature)
[0133] Cut out the JIS No. 5 tensile test piece from the test material so that the longitudinal direction is parallel to the rolling direction, hold it at each temperature shown in Table 3 for 30 minutes, and then pull it at the same temperature according to the provisions of JISZ2241. Tensile test, measuring 0.2% yield strengt...
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